Improvement in shuttle-box mechanisms for looms



2 Sheets-Sheet l.

H1B. RBNWICK. Shuttle-BOX Mechanism for Looms.

lNo. 209,714. Patented Nov. 5,1878.

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N.PVEEHS. PHOTO-UHDGRAPHER. WASHINGTON, D. C.

2 Sheetsf-fSheet 2.

No. 209,714. Patented Nov. 5,1878.

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fNrrED STATES PTENT HENRY B. RENWICK, OF NEW YORK, N. Y.,ASSIGNOR TOGEORGE CROMPTON,

v OF WORCESTER, MASS.

IMPROVEMENT ION SHUTTLE-BOX IVIECHANISMS FOR LOOMS.

Specification forming part of Letters Patent No. 209,714, dated November5, 1878;. application led April 22, 187'8.

To all whom it may concern Be it known that I, HENRY B. RENWIGK, of thecity, county, and State of New York, have invented an ImprovedGontrivance for Shifting the Shuttle -Boxes of Looms; and that thefollowing, taken in connection with the drawings, is a full, clear, andexact description thereof.

In the drawings, Figure l represents, in side elevation, a suiiicientportion of a loom to illustrate one embodiment of my invention, itshowing a shuttle-box lever connected by connecting-rods with gears suchas are common to the Knowles loom, in one position by full and anotherby dotted lines, such gears being commonly held in such manner as toboth turn on their axes and vibrate with their axes, so as to be in gearwith either of two constantlyrevolving toothed surfaces. Fig. 2 is aside elevation, showing the same devices in two other differentpositions, so as by the full and dotted lines of both Figs. l and 2 toshow the four positions in lwhich the shuttle-boxes may be placed by thesingle lever. Fig. 3 is a top view of Fig. l, the boxes being omitted.Fig. 4 is a cross-section taken on the linesxx, Fig. 3, to show theslide which carries the lever. Fig. 5 shows, in elevation, thecontrivance applied to the parts of a Knowles loom. Fig. 6 is anelevation of a modified form of the contrivance, wherein the cranks aremounted on gears which have only a motion of revolut-ion or a turningmotion on their axes.

In my contrivance a single lever only is employed, actuated by cranksmoving through half a revolution, or thereabout, and by means of thislever a series of either three or four shuttle -boXes may be properlyshifted under the direction of an ordinary pattern chain or barrel.

In all the drawings this lever is represented at a, and is provided witha pivot or steadying pin, b, which is mounted on a slide, c, which isfree to move in proper guides d, as the cross-head of a steam-engine orpump moves in its guides. At two points on this lever there are attachedto it by proper joints connecting-rods e f, and these connecting-rodsare at their other ends attached to crank-pins g, mounted on a shaft insuch a manner that the crank-pins may either oscillate through ahalf-revolution, or a little more, or may rotate in the saine directionfrom one dead-center to the other, or vice versa.

The contrivance therefore consists, essentially, of a lever, of twoconnecting-rods, of a steadying-pin, and of a slide on which thesteadying-pin is mounted, and two crank-pins.

In Figs. 1, 2, and 3 the crank-pins are represented as secured togear-wheels h h', which in practice will be mounted upon radius-bars,such as shown at i, Fig. 5, whose positions are regulated by a patternbarrel, j, or chain, so that either gear-wheel h or h' may be in gearwith one or the other of two constantly -revolving toothed surfaces, kl, or so that either or both gearwheels may be out of gear with both thetoothed surfaces, as in the well-known Knowles loom.V

In the modification shown in Fig. 5, the connecting-rods e f, instead ofbeing directly attached at one of their ends to the crankpins of thegears h, Aare attached to intermediate slides n, fitted to move insuitable guides, such as employed for slide c, which slides n areconnected to the. crank-pins by secondary connecting-rods o p.

Referring to Fig. 1 of the drawing, the full lines show the lever aconnected -by a cord or chain to the rod 7 of a series of fourshuttleboxes, and in the position it will occupy when No, l shuttle -boXis at the level of the race but such lever may, however, be connectedwith the rod o", or directly with the series of boxes, and by otherdevices than a cord or chain, as by a link, as in dotted lines, Fig. 6,or by a slot and pin.

R y moving the crank-pin g of the gear-wheel h, in the operation of theloom, through half a revolution, or through a little more than half arevolution, as in the Knowles loom, in thedirection of arrow 2 in Fig.l, the connectingrod f will be moved to place lever a and slide c in theposition shown in dotted-lines in such figure, thereby bringing the N o..2 shuttle-box in position.

Viewing Figs. 1 and 3, by rotating gearwheel h in the direction of arrow3 through half a revolution, (see Fig. 3,) leaving thel gearwheel hstationary, the connecting rod e,

Prion.;

joined with the wheel h', will move the lever a and slide n from theposition shown in full lines, Fig. l, to the position shown in fulllines, Fie'. 2, thus placing No. 3 shuttle box at the level of the race.

To reach No. 4 box, thelever, as shown infull lines, Fig. 2, is moved bythe semi-rotation of gearwheel IlJ in the direction of arrow 4, itmoving the lower end of lever a., through the connecting-rod f, to theposition shown in dotted lilies, Fig. 2.

It is obvious from this explanation that any one ot' four shuttle-boxesmay be located and held opposite the race.

In Fig. 6 the ccntrivance is represented as having the gear-wheels uponwhich the crankpins are mounted provided with non-vibrating axes, andactuated by two other gearwheels, t u, which may be caused to oscillateand revolve under the direction of a patternchain by mounting them onradius-bars and causing them to gear with either ot' twoconstantly-revolvin g toothed surfaces, (not represented in this gure,)or to stand out of gear with these toothed surfaces, as described of theparts k l, Fig. 5.'

In this modification there would be two gearwheels to support thecrank-pins, two others on vibrating axes always gearing with thosecarrying the crank-pins, and two toothed surfaces, like those shown at lkin FiO. 5.

I also intend to move the gears carryin g the cranks by largegear-wheels, provided with laterally-projecting pins, acted upon bypawls moved by a shaft in the loom and governed by a pattern-chain, suchdevices being shown in English Patent No. 1,455, June 14, 1860.

In fact, the means for moving the crankpins are unimportant, so long assuch means will move them through a half or about half a revolution whenit becomes necessary.

When the contrivance is to be .pplicd to shift a tier of only threeshuttle-boxes, then the crank nearest that end of the lever from whichthe motion to move the box-rod is taken should have its throw reduced,and the end of the lever will then, under a proper proportion of thethrow of the cranksand length of lever, assume only three positions.rlhe steadying-pin and ,slide may be shifted toward one or the other endof the lever.

I claim- The herein-described combination of two crank-pins, mechanismto operate them, a single lever mounted upon a slide, twoconnecting-rods joining the crank-pins with the said lever each side itspivotal pointV upon the slide, and a connection, substantially such asis described, between the said lever and a tier of shuttle-boxes,whereby said lever will operate a tier of shuttle-boxes, substantiallyas set forth.

In testimony whereof I have signed my naine to this specification in thepresence of two subscribing witnesses.

HENRY B. RENI/VICK.

Vitnesses:

G. W. GREGORY, N. E. WHITNEY.

